PSY 111 Lecture Notes - Lecture 27: Bulimia Nervosa, Binge Eating, Basal Metabolic Rate
Document Summary
Metabolism body"s rate of energy utilization. Two-thirds of energy used goes to support basal metabolism, the resting, continuous metabolic work of body cells intake (hunger not necessarily linked to immediate energy needs) Immediate energy supply information interacts with other signals to regulate food. Homeostatic mechanisms are designed to prevent people from running low on. Body has long term signals that adjust appetite and metabolism: Signals that start and terminate a meal. People with nerves cut to stomach or stomach surgically removed still reported feelings of hunger. Sensors in hypothalamus and liver monitor blood glucose concentrations. If glucose levels drop, liver converts stored nutrients back into glucose, producing a drop-rise glucose pattern. Humans display a temporary drop-rise glucose pattern prior to experiencing hunger. Walls of stomach and intestine stretch while eating, send nerve signals to brain to indicate fullness. Nutritionally rich food can produce full feeling quicker than equal volume of less nutritious food.
